Novel buffer

Abstract

The utility model belongs to the technical field of buffers, and particularly relates to a novel buffer. Comprising an inner cylinder and an outer cylinder, an elastic-plastic body is arranged between the inner cylinder and the outer cylinder, and the elastic-plastic body can be completely sealed. A first gap opposite to the elastic-plastic body is formed between the elastic-plastic body and the inner cylinder, a second gap opposite to the elastic-plastic body is formed between the elastic-plastic body and the outer cylinder, and the first gap and the second gap are expansion spaces reserved by the elastic-plastic body and used for containing and limiting circumferential deformation generated when the elastic-plastic body is compressed, so that collision and collision between the elastic-plastic body and the inner cylinder are avoided, and the service life of the elastic-plastic body is prolonged. The internal structure of the buffer is protected, and the structural strength and elastic performance are guaranteed. Furthermore, the width of the first gap is smaller than that of the second gap, so that the first gap is just matched with the deformation body position of the elastic plastic body at different time, effective absorption and dispersion of impact energy are achieved, meanwhile, the internal structure of the buffer is protected, and the structural strength and the elastic performance of the buffer are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to buffer technical field, concretely relates to a novel buffer. BACKGROUND

[0002] The buffer is mainly aimed at the metal fracture or deformation problem of the existing spring buffer in the high-frequency working condition use environment of the complex working condition use environment of the large crane equipment such as port machinery, mine machinery, heavy industry machinery and steel plant, therefore, the polyurethane composite buffer is used to overcome the above-mentioned problems, but the polyurethane material is vulnerable to ultraviolet rays in the outdoor, which leads to the service life of polyurethane, and needs to be closed, but the polyurethane composite buffer will appear the circumferential expansion deformation when being used, the inner cylinder and the elastoplastic body of the existing polyurethane composite buffer do not reserve the gap, when the impact object compresses or impacts the composite buffer, the inner cylinder of it runs inwards, and the elastoplastic body in the inner cylinder is compressed. The diameter of the elastoplastic body will become larger, leading to the expansion of the elastoplastic body, and the volume of the elastoplastic body will overflow outward, and the inner cylinder runs inwards, and the bottom space is blocked by the baffle, since the space inside is certain, the elastoplastic body that expands outward and the inner cylinder that runs inwards collide and impact, leading to the deformation of the elastoplastic body, the damage of the elastoplastic body, the damage of the inner cylinder and the impact to the outer cylinder. The collision will damage the internal structure of the buffer, make the elastic performance of the buffer decrease, and the buffering effect is greatly reduced, the buffer cannot effectively absorb the vibration and impact energy, and the stability and reliability of the product are reduced. Moreover, the frequent collision causes the elastoplastic body to appear cracks, wear and other damages, accelerates the aging process, and greatly shortens the service life. The inner cylinder will also have the problems of indentation, deformation and the like due to the collision, and the structure strength and precision of the inner cylinder are influenced. CONTENT

[0003] In order to solve the defects existing in the prior art, the utility model provides a novel buffer. The outer package structure of the elastoplastic body is improved, so that a structural deformation space is formed between the elastoplastic body, and the deformation position of the elastoplastic body is matched, the elastoplastic body is shielded and enclosed, and the elastoplastic body is limited, so that the elastoplastic body can be used for a long time.

[0004] The utility model adopts the technical scheme as follows:

[0005] A novel buffer, comprising an inner cylinder and an outer cylinder, the inner cylinder is axially movably connected in the outer cylinder; an elastoplastic body is arranged between the inner cylinder and the outer cylinder, a spring is arranged in the elastoplastic body, and the spring and the elastoplastic body are arranged on the same axis; a first gap is formed between the elastoplastic body and the inner cylinder, and a second gap is formed between the elastoplastic body and the outer cylinder.

[0006] A ring-shaped inner buckle is arranged at the opening of the outer cylinder, a ring-shaped protrusion is arranged at the end of the inner cylinder, and the ring-shaped inner buckle and the ring-shaped protrusion are abutted to limit the displacement of the inner cylinder.

[0007] The outer cylinder end is provided with a flange plate, and the elastoplastic body and the spring are arranged in the inner cylinder and the inner wall of the flange plate at the maximum displacement.

[0008] The connecting part of the annular inner buckle and the annular protrusion is provided with a J-shaped dustproof ring.

[0009] The first gap and the second gap are annular cavities surrounding the circumference of the elastoplastic body.

[0010] The height of the first gap is smaller than the height of the second gap.

[0011] The spring is cast in the elastoplastic body.

[0012] The flange plate and the outer circumference of the inner cylinder are both provided with anti-falling rings, and the anti-falling rings are connected through a steel wire rope.

[0013] The elastoplastic body is a hollow cylinder, and half of the spring inside is exposed outside the elastoplastic body.

[0014] The elastoplastic body is a hollow cylinder, and the spring inside is fully covered by the elastoplastic body.

[0015] The elastoplastic body is a solid cylinder, and the spring inside is fully covered by the elastoplastic body.

[0016] In summary, due to the adoption of the above technical scheme, the beneficial effects of the utility model are:

[0017] Overall, compared with the prior art, the utility model provides a novel buffer. The inner cylinder and the outer cylinder enclose the elastoplastic body outside, which can give complete sealing. Meanwhile, the first gap and the second gap inside the inner cylinder and the outer cylinder are the expansion space reserved for the elastoplastic body, which is used for accommodating and limiting the circumferential deformation of the elastoplastic body when compressed, avoiding the knocking and impact of the elastoplastic body with the inner cylinder, protecting the internal structure of the buffer, and ensuring the structural strength and elastic performance. Further, due to the existence of the spring (the compression of the spring is mainly axial deformation, without radial deformation), the elastoplastic body is axially compressed in the early stage, and at the same time, slightly deforms radially outward, and the radial deformation amount is very small, so the size of the first gap can be as small as possible to better limit the deformed body. The size of the elastoplastic body increases radially outward during continuous extrusion, so the size of the second gap can be as large as possible to make the elastoplastic body further extrude and fill in the second gap. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be explained through examples and by referring to the drawings, wherein:

[0019] Figures 1-3 It is three different implementation structure schematic diagram of buffer in the utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] This embodiment provides a novel buffer, see reference. Figures 1-3 :

[0022] It mainly consists of an inner cylinder 1 and an outer cylinder 2, with the inner cylinder 1 axially connected inside the outer cylinder 2. An elastic-plastic body 3 is placed in the gap between the inner cylinder 1 and the outer cylinder 2. The optional material includes rubber, thermoplastic elastomer (TPE), and plastics. This embodiment uses polyurethane, but it is not limited to this in practical applications; polyurethane, rubber, foamed rubber, polyether, etc., can also be used. A flange plate 9 is provided at the end of the outer cylinder 2. Under normal conditions, the elastic-plastic body 3 and the spring 4 abut against the inner wall of the inner cylinder 1 and the flange plate 9 at the point of maximum displacement. A spring 4 is built into the elastic-plastic body 3 along the axial direction. The spring 4 is cast within the elastic-plastic body 3 and is coaxially arranged with the elastic-plastic body 3, together forming the core elastic support structure of the buffer. A first gap 5 is formed between the elastic-plastic body 3 and the inner cylinder 1, and a second gap 6 is formed between the elastic-plastic body 3 and the outer cylinder 2. Both the first gap 5 and the second gap 6 are annular cavities surrounding the circumference of the elastic-plastic body 3. These two annular cavities provide necessary expansion space for the elasto-plastic body 3 to increase in diameter during compression. When the buffer is subjected to external force, the elasto-plastic body 3 undergoes compression deformation, and its diameter will increase accordingly. At this time, the first gap 5 and the second gap 6 can accommodate the circumferential deformation of the elasto-plastic body 3, preventing it from directly colliding and impacting with the inner cylinder 1 or the outer cylinder 2.

[0023] When the buffer is subjected to external impact force, the inner cylinder 1 will move axially relative to the outer cylinder 2, while compressing the elastoplastic body 3. During the compression process, the spring 4 inside the elastoplastic body 3 will be further compressed, providing additional elastic support force. At the same time, the elastoplastic body 3 itself will also deform, absorbing and dispersing impact energy. Due to the existence of the first gap 5 and the second gap 6, the deformation of the elastoplastic body 3 in the circumferential direction is fully accommodated and limited, avoiding contact with the inner cylinder 1 or the outer cylinder 2 due to excessive deformation, thereby protecting the internal structure of the buffer.

[0024] In summary, the structural elastoplastic body 3 buffer provided in the embodiment achieves effective absorption and dispersion of impact energy through reasonable structural design and gap setting, while protecting the internal structure of the buffer, ensuring its structural strength and elastic performance.

[0025] In a specific embodiment, to ensure that the axial movement of the inner cylinder 1 during the operation of the buffer is within a safe and controllable range, and to avoid damage to the internal structure or affect the buffering performance due to excessive movement, the embodiment carefully processes and sets an annular inner buckle 7 structure at the open end of the outer cylinder 2. The annular inner buckle 7 has appropriate size and shape, which can realize precise fitting with the end of the inner cylinder 1. At the same time, an annular protrusion 8 is also ingeniously arranged at the corresponding end of the inner cylinder 1. The annular protrusion 8 and the annular inner buckle 7 at the opening of the outer cylinder 2 are matched in size and shape, forming a reliable abutting structure.

[0026] When the buffer is working normally, the inner cylinder 1 will move axially relative to the outer cylinder 2 under the action of external force. As the movement proceeds, when the annular protrusion 8 at the end of the inner cylinder 1 comes into contact and abuts with the annular inner buckle 7 at the opening of the outer cylinder 2, an effective limiting action will be generated. This limiting action can clearly define the maximum displacement position of the inner cylinder 1, preventing it from moving outward further, thereby protecting the internal structure of the buffer from being damaged.

[0027] In a specific embodiment, to further enhance the sealing performance, protection effect and stability of the buffer structure, the embodiment sets a J-shaped dustproof ring 10 at the connection between the annular inner buckle 7 and the annular protrusion 8. In actual application environment, the buffer will inevitably be exposed to various dust, impurities and other pollutants. The existence of the J-shaped dustproof ring 10 can effectively prevent these dust and impurities from entering the interior of the buffer, avoiding their damage to the internal structure such as abrasion and corrosion, thereby prolonging the service life of the buffer. In addition to dust prevention, the J-shaped dustproof ring 10 can also enhance the sealing performance of the connection between the annular inner buckle 7 and the annular protrusion 8. It can prevent the leakage of lubricants and other internal media, ensure the normal operation of the lubrication system inside the buffer, reduce friction and wear caused by insufficient lubrication, and improve the working efficiency and stability of the buffer.

[0028] In a specific embodiment, for the structural design of the buffer, the embodiment innovatively sets the key parameter that the height of the first gap 5 is less than the height of the second gap 6.

[0029] The height parameters of the first gap 5 and the second gap 6 are calculated and verified through repeated experiments, so that they are perfectly matched with the deformation position of the elastoplastic body 3 at different compression stages. Specifically, when the buffer is subjected to external pressure, the elastoplastic body 3 first enters the early compression stage. At this stage, the elastoplastic body 3 mainly undergoes axial compression, accompanied by slight radial deformation outward. At this time, the first gap 5 serves as the initial accommodation space for the radial deformation of the elastoplastic body 3, and its size and position are exactly matched with the deformation state of the elastoplastic body 3 at this time, providing the elastoplastic body 3 with just the right expansion space to ensure that the elastoplastic body 3 can smoothly complete axial compression and slight radial deformation without colliding with the inner cylinder 1.

[0030] As the pressure continues to increase, the elastoplastic body 3 is continuously squeezed, and its radial outward size gradually increases. At this time, the second gap 6 begins to play an important role. As an accommodation space for further deformation of the elastoplastic body 3, it can fully accommodate the increasing radial size of the elastoplastic body 3, allowing the elastoplastic body 3 to maintain a stable deformation state during compression, avoiding structural damage or performance degradation due to excessive deformation.

[0031] By designing the height of the first gap 5 to be less than the height of the second gap 6 and matching it with the deformation position of the elastoplastic body 3, the buffer of the embodiment can achieve the following technical effects:

[0032] Improve the buffering performance: reasonable gap design allows the elastoplastic body 3 to deform more uniformly and stably during compression, thereby more effectively absorbing and dispersing external impact energy, improving the buffering performance of the buffer.

[0033] Protect the internal structure: the precise setting of the first gap 5 and the second gap 6 provides sufficient expansion space for the elastoplastic body 3, avoiding direct contact and collision between the elastoplastic body 3 and the inner cylinder 1 or the outer cylinder 2, effectively protecting the internal structure of the buffer from damage.

[0034] Enhance structural stability: the smaller first gap 5 effectively limits the deformation of the elastoplastic body 3, allowing the elastoplastic body 3 to maintain a stable deformation state during compression, thereby enhancing the overall structural stability of the buffer.

[0035] Expand the application range: this innovative gap design allows the buffer to adapt to more different working conditions, expanding its application range and improving the market competitiveness of the product.

[0036] In a specific embodiment, the flange plate 9 and the outer periphery of the inner cylinder 1 are each provided with a fall-preventing ring 11, and the fall-preventing rings 11 are connected by a steel wire rope 12, which connects the inner cylinder 1 and the bottom flange plate 9, locks the two ends of the mounting base, and prevents the inner cylinder 1 from falling from a high altitude to cause a safety hazard.

[0037] In a specific embodiment, for the elastoplastic body 3, referring to Figures 1-3 The following three specific configurations are disclosed to meet the buffering requirements in different application scenarios:

[0038] The hollow cylindrical elastoplastic body with full coverage of springs: In this structure, the elastoplastic body is also a hollow cylinder, but the internal spring is completely covered by the elastoplastic body. This design can absorb medium to large energy at the same volume, and the buffering process is stable and has strong impact resistance. It meets the use requirements under various speeds and harsh environments, does not need frequent maintenance, and has a long service life. For impact objects with medium kinetic energy, this structure can exhibit high energy absorption capacity and has a good buffering stroke, can absorb large energy at the same volume, and realizes stable buffering.

[0039] The hollow cylindrical elastoplastic body with partial exposure of springs: In this structure, the elastoplastic body is designed as a hollow cylinder, and the internal spring is partially exposed outside the elastoplastic body. This design allows the bumper to not only rely on the deformation of the elastoplastic body to absorb energy when impacted, but also use the elastic restoring force of the spring to assist in resetting to some extent, thereby prolonging the service life of the bumper and reducing maintenance costs. For impact objects with small kinetic energy but high frequency, this structure can provide high-frequency buffering effect; at the same time, it can also accept impact objects with medium kinetic energy, has a good buffering stroke, can effectively absorb high-frequency vibrations, and realizes fine-tuning buffering characteristics.

[0040] The solid cylindrical elastoplastic body with full coverage of springs: In this structure, the elastoplastic body is designed as a solid cylinder, and the internal spring is also completely covered by the elastoplastic body. This design allows the bumper to absorb the energy of large impact objects, effectively resist large impact forces, have strong absorption and buffering capacity, and effectively slow down the impact speed. It comprehensively deals with impacts of different frequencies, has good high-temperature resistance, and has low maintenance costs. For situations where the impact object has a large amount of energy, this structure can ensure stable operation and efficient energy absorption of the bumper.

[0041] The above-described above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A new type of bumper, characterized in that, It includes inner cylinder (1) and outer cylinder (2), the inner cylinder (1) is connected to the outer cylinder (2) in the axial activity;The elastic-plastic body (3) is arranged between the inner cylinder (1) and the outer cylinder (2), the spring (4) is arranged in the elastic-plastic body (3), the spring (4) is arranged in the same axial direction with the elastic-plastic body (3);The elastic-plastic body (3) and the inner cylinder (1) form the first gap (5), and the elastic-plastic body (3) and the outer cylinder (2) form the second gap (6).

2. A new type of damper as claimed in claim 1, characterized in that, The opening of the outer cylinder (2) is provided with annular inner buckle (7), and the end of the inner cylinder (1) is provided with annular convex (8) in the corresponding position, which forms the abutting and limiting effect of the maximum displacement of the inner cylinder (1).

3. A novel damper as claimed in claim 2, wherein, The end of the outer cylinder (2) is provided with flange plate (9), and the elastic-plastic body (3) and spring (4) are arranged in the inner cylinder (1) and the inner wall of flange plate (9) at the maximum displacement.

4. A new type of damper as claimed in claim 2, wherein, The connecting part of the annular inner buckle (7) and the annular convex (8) is provided with J type dustproof ring (10).

5. A new type of damper as claimed in claim 1, wherein, The first gap (5) and the second gap (6) are both annular cavities around the circumference of the elastic-plastic body (3).

6. A new type of damper as claimed in claim 1, wherein, The height of the first gap (5) is less than the height of the second gap (6).

7. A new type of damper as claimed in claim 3, wherein, The flange plate (9) and the outer circumference of the inner cylinder (1) are both provided with anti-falling ring (11), and the anti-falling ring (11) is connected by steel wire rope (12).

8. A new type of damper as claimed in claim 1, wherein, The elastic-plastic body (3) is a hollow cylinder, and the spring inside is exposed outside the elastic-plastic body (3).

9. A new type of damper as claimed in claim 1, wherein, The elastic-plastic body (3) is a hollow cylinder, and the spring inside is fully covered by the elastic-plastic body (3).

10. A new type of damper as claimed in claim 1, characterized by The elastic-plastic body (3) is a solid cylinder, and the spring inside is fully covered by the elastic-plastic body (3). The elastic-plastic body (3) is a solid cylinder, and the spring inside is fully covered by the elastic-plastic body (3).

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